ICS 43.040.60  
T 26 
 
 
National Standard for the People’s Republic of China  
GB11566 200× 
In replacement of GB11566 1995  
 
 
 
 
Passenger Vehicle — External Projections  
 
(Draft for Approval)  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Released on ××/××/××××                                   Implemented on ×× /××/××××  
Issued by  
 
General Administration of Quality Supervision,  
Inspection and Quarantine of the People’s Republic of China  
Standardization Administration of the People’s Republic of China  GB 11566 —200× 
Table of contents  
Introduction ................................ ................................ ................................ ................................ ........................ 3 
1. Scope ................................ ................................ ................................ ................................ .......................... 5 
2. Reference Guidelines ................................ ................................ ................................ ................................ .5 
3. Terminology and Definition ................................ ................................ ................................ ...................... 5 
4. General Requirements ................................ ................................ ................................ .............................. 7 
5. Special requirements ................................ ................................ ................................ ................................ .7 
Appendix A (Guideline Appendix) The correlation of the chapter numbering in this standard and ECE R26
................................ ................................ ................................ ................................ ................................ ............ 13 
Appendix B (Guideline Appendix)  Projection an d gap measurement method ................................ ............ 14   GB 11566 —200× 
 
Introduction  
All technical contents in this standard are mandatory.  
This standard replaces GB11566 -1995 “External projections of a car”.  
This amendment of the technical contents in this standard  has adopted relevant articles from the 
ECE R2 6 Regulation (03 Series, 2007) “The uniform regulations on vehicle certification 
regarding external projections” (French Edition). Appendix A has listed the correlation on the 
chapter and section numbering betw een this standard and the ECE R26 Regulation.  
The following amendments have been made in this standard according to the actual situations in 
China when adopting the ECE R26 Regulation : 
—According to people’s average height in China, “2 m” has been changed to “1.8 m” in 4.1 
5.17.1 in this standard ; 
—Guideline references have been added ; 
—The following chapters and appendices in the ECE R26 have been removed: Chapter 3 
“certification application”, Chapter 4 “certification”, Chapter 7 “the amendments and extension 
of certifica tion of the car models”, Chapter 8 “production conformity”, Chapter 9 “penalty on 
production inconformity”, Chapter 10 “stop production”, Chapter 11 “names and addresses of 
the certifying departments and government departments”, Chapter 12 “transitional te rms”, 
Appendix 1 “notification”, Appendix 2 “layout sample of the certification logo”, Appendix 4 
“notification”.  
For ease of use, the following editorial amendments have been made  to ECE R26 Regulation : 
—“cm” has been changed to “mm”, “daN” has been chang ed to “N” ; 
—“this regulation” has been changed to “this standard” ; 
—For the figure in Appendix B, the figure description in GB11566 -1995 has been adopted ; 
—Reference Appendix A has been added . 
The main differences between this standard and GB11566 -1995 are  as follows:  
—Title has been changed: “car” changed to “passenger car” ; 
—Application scope: “car” changed to “M1 vehicles” (1 in this edition) ; 
—Vehicle model, radius value of round angle, size of project, definition of antenna have been 
added (3.1,3.4,3.7 ,3.9 in this edition) ; 
—Technical requirements for bumpers have been amended (5.5.2 in this edition) ; 
—The margin range for metal plates has been adjusted (5.8 in this edition) ; 
—The height and technical requirements for antenna base projection have been a mended (5.17.4 
in this edition) ; 
—The technical requirements for antennas with a base that is difficult to identify (5.17.4.1 and 
5.17.4.2 in this edition) ; 
—Reference Appendix A has been added (Appendix A in this edition) ; 
Appendix A is for reference. App endix B is for guidance .  
Regarding the transitional requirements in 5.5.2 5.17.4.1 5.17.4.2:  
a) For newly certified models, this standard will be effective from 01/01/2011 ;   GB 11566 —200× 
b) For models in production, this standard will be effective from 01/01/2012.  
This standard is brought forward by the National Development and Reform Commission.  
This standard is administered by the National Automotive Standardization Technical Committee.  
Drafted by: Shen Long Automotive Ltd., Dong Feng Automotive, National Centr e for Q uality 
Supervision & Inspection of Automotives (Xiang Fan), Zheng Zhou Nissan.  
Drafted by: WANG Yan, HOU Chuihua, HUANG Xiaomei, WANG Yumin.  
This standard replaces the following:  
GB11566 -1989, GB11566 -1995. 
   GB 11566 —200× 
 
Passenger Vehicle — External Projections  
 
1. Scope 
This standard specifies the general requirements, special requirements and inspection methods of 
external projections for M1 vehicles in GB/T 15089 -2001.  
This standard is applicable to external projections of M1 vehicles.  
This standard is applicable to both stationary and mobile vehicles, but not applicable to wing 
mirrors or towing devices.  
 
2. Reference Guidelines  
By being quoted in this standard, the terms in the following documents become standard terms. 
Any quoted documents with dates, and all subsequ ent amendments (not including the contents of 
corrigenda) or the revised edition, are not applicable to this standard. However, relevant parties 
who reach an agreement according to the standard are encouraged to research into whether the 
latest versions of  these documents should be used. For documents without a quoted date, the 
latest version applies to this standard.  
 
GB/T 15089 -2001 Classification of motor vehicles and trailers. (eqv ECE R.E.3 edition 1)  
 
3. Terminology and Definition  
The following termino logies and definitions are applicable to this standard.  
3.1 
Vehicle type  
Vehicles that do not differ  in major aspects such as external surface forms or materials.  
3.2 
External surface  
The visible surface of vehicle covers including engine hood, boot lid, d oors, roof, lighting and 
signalling devices and visible ribs.  
3.3 
Floor line    GB 11566 —200× 
The line is defined as follows:  
Select a 30° half -angle cone ( at a convenient height , keep the cone tip upwards with the cone 
axis perpendicular to the floor). Go along and keep i n contact with the lowest point of the 
exterior of a laden vehicle, the resulting track is the floor line. When deciding the floor line, the 
supporting point of the jack, exhaust or wheels are not taken into consideration. The vaulted gaps 
in the wheel can  be ignored as if it is a continuous smooth surface. When deciding the floor lines 
on the side, bumpers should be taken into consideration. For certain models, the cone contact 
point can be at the ends of the bumpers or the body panels under the bumpers. I f there are two or 
more contact points, the lowest point should be used when deciding the floor line.  
3.4 
Radius of curvature  
Radius of the curve closest to a circle.  
3.5 
Laden vehicle  
Vehicle laden with maximum load capacity. If the vehicle is equipped wi th liquid air, liquid or 
air spring suspension, or autostabilizer (load variable ), it should be loaded as in the least 
favourable condition under manufacture’s specified normal driving conditions.  
3.6  
Extreme outer edge  
For the sides, this refers to the two planes which are parallel to the vehicle’s Y plane and tangent 
to the outer edges on the sides. For the front and back, it refers to the planes which are parallel to 
the vehicle’s X plane and tangent to the outer edges on the front and back. The follow ing 
projections are ignored when considering the vehicle’s extreme out er edges:  
— the area where the tyres touch the ground and tyre valves ; 
— anti-skid devices fitted on the tyres ; 
— exterior mirrors ; 
— side indicators, side lights, headlights, rear lights and pa rk lights ; 
— parts fitted on the front and rear bumpers, towing devices and exhausts . 
3.7  
The dimension of the projection  
The dimension of the projection of the part fitted on the body panel. It should be measured as 
described in Appendix B.2.  
3.8  
The nom inal line of a panel  
As described in Appendix B.2.2, use a ball (diameter =  100mm) to measure the body panel. The 
nominal line is the link between the two ball centres while the ball is at the start and end 
positions.  
3.9 
Aerial  
The device to transmit and/ or receive electromagnetic signal.    GB 11566 —200× 
4. General Requirements  
4.1 This standard is not applicable to parts whose outer surface is at the following locations when 
the vehicle is laden, with doors, windows and all apertures closed:  
— parts 1.8 m higher than the grou nd; 
— parts lower than the floor line ; 
— parts not contactable by the ball (diameter =  100 mm), in operation or static . 
4.2 There should not be any sharp parts on the body exterior, nor any projections that can 
increase the risk of scratch ing, bruis ing or causing injury during a collision due to its shape, 
dimension, orientation or hardness, etc.  
 
4.3 There should not be any projected parts that may come into contact with pedestrians, cyclists 
or motorcyclists.  
 
4.4 The fillet radius  of the projection should be  no less than 2.5mm. This does not include parts 
with a projection of less than 1.5mm, or with a projection of great er than 1.5mm but less than 
5mm and which  has a round and smooth surface.  
 
4.5 When the hardness of the material of the projected parts doe s not exceed Shore (A) 60 HA, 
the fillet radius  can be less than 2.5mm. The parts should be fitted on the vehicle before 
measuring the hardness when Shore (A) hardness measurement cannot be used, comparative 
measurement can be used instead.  
 
4.6 All specif ications in 4.1 to 4.5 are applicable unless specified otherwise in chapter 5.  
5. Special requirements  
5.1 Trim  
5.1.1 Any trim with a projection of over 10mm should be able to retract back into its bearing 
surface, come off or bend  when 100N force is applied  to its highest point from any direction . 
This is not applicable to trims fitted to the radiator grill where they only need to meet the general 
requirements in chapter 4.  
When applying 100N force, a flat-ended indentor with a diameter of no greater than 50 mm 
should be used. Otherwise, use equivalent.  After the trim retracts, comes off or bends, the 
remaining projection height should be no greater than 10mm. These projections should always 
meet the requirements of 4.2. If the trim is fitted on a base panel, then the base panel is 
considered to be part of the trim, not the bearing surface.  
5.1.2 The protective trim or protective parts on the body exterior are not restricted by 5.1.1, but 
should be fitted to the vehicle firmly.    GB 11566 —200× 
5.2 Headlights  
5.2.1 Projected ho od and rim are allowed for headlights. However, the projected headlight lamps 
should not exceed 30mm and the fillet radius should be no less than 2.5mm. If the headlights are 
fitted behind an added transparent surface, the projection should be measured fro m the 
transparent surface. Projection height should be measured as specified in Appendix B.3.  
5.2.2 Retractable headlights should meet the requirements in 5.2.1. whether in the  operating 
position or retracted.  
5.2.3 5.2.1 requirements are not applicable t o headlights set in the body panel or projected from 
the body panel. However, the body panel should meet the requirements in 5.9.  
5.3 Grill e and gap  
5.3.1 4.4 requirements are not applicable to situations whe re the gap between the fixed 
components or mova ble components (including ventilation duct parts and radiator cover) is less 
than 40mm and there’re functional requirements for the gap . When the gap is between  
25mm ~ 40mm, the fillet radius should be no less than 1mm. When the gap is no more than 
25mm, the fillet radius of the outer edge should be no less than 0.5mm. The gap between two 
adjacent components should be measured as per Appendix B.4.  
5.3.2 The joint on the front and side of each component for the grille and gap should be round 
and smooth.  
5.4 Windscreen wiper  
5.4.1 The pivot of the windscreen wiper should have a protective cover. The fillet radius should 
meet the requirements in 4.4. Its bottom area should be no less than 150mm2If the cover is 
round, when measuring at a distance no more tha n 6.5mm from the tip of the projection, there 
should be a projection shallow of minimum 150mm2. The rear wipers and the front headlight 
wipers should also meet these requirements.  
5.4.2 The wiper blade and its bearing unit are not restricted by the specif ications in 4.4. However, 
there should be no sharp edge or blade on them.  
5.5 Bumper  
5.5.1 The two ends of the bump er should bend towards the vehicle body to reduce the risk of 
scraping. If the bumpers are set in or are integral to  the body of the vehicle,  or if the sides of the 
bumpers bend inward and are not contactable by a ball (diameter = 100mm) and the gap between 
the ends of the bumpers and the vehicle body is no greater than 20mm, it is considered to be 
meeting all the requirements.  
5.5.2 If the ve hicle contour line overlaps with the vertical projection of the front and rear bumper 
curves, or if the projection is within 20mm inside contour line, or within 15º tangent of the 
vehicle contour line, (see Figure 1), the fillet radius should be no less th an 5mm. Otherwise, the 
fillet radius should be no less than 2.5mm.  
   GB 11566 —200× 
Figure 1
  
5.5.3 5.5.2 requirements are not suitable for parts or inset parts on the bumpers with a projection 
height of less than 5mm, especially for the joint corner and nozzle of the  headlight washer. The 
projected corners of these parts should be round and smooth , parts with a projection height less 
than 1.5mm  excepted.  
5.6 The handle, hinge and button of the door, boot lid and engine hood; oil tank lid and all other 
lids or covers  
5.6.1 The projected height of the door, boot lid handle should be no more than 40 mm. For others, 
it should be no more than 30 mm.  
5.6.2 If the side door handle can be turned, then i t should meet one of the following requirements:  
5.6.2.1 If the side door h andle can be turned parallel to the door surface, the free end of the 
handle should be towards the rear and bend towards the door panel. The handle should also be 
set in a protective cover or set in a slot.  
5.6.2.2 For a handle that is not in parallel to the door surface and can be turned outwards towards 
any direction, when in a c losed position, the free end of the handle should be towards the rear or 
downwards. The handle should also be set in a protective cover or set in a slot.  
Handles that do not mee t the above requirements, but meet the following requirements can also 
be accepted:  
a) The handle has an independent return mechanism;  
b) If the return mechanism is damaged, the projection of the handle should be no more than 
15mm;  Vehicle 
contour line  Vertical plane  
Shadow area: 
Bumpers with a 
minimum fillet 
radius of 5 mm.    GB 11566 —200× 
c) When in an open pos ition, it should meet the requirements in 4.4;  
d) The surface of the handle should be no less than 150mm2, when measured from the tip of the 
projection at a distance of no more than 6.5mm.  
5.7 Wheel, wheel nut, wheel hub cover and wheel cap  
5.7.1 The oute r surface of wheel, wheel nut, wheel hub cover and wheel cap are not restricted by 
4.4. 
5.7.2 There should not be any sharp projections on any wheel, wheel nut, wheel hub cover or 
wheel cap that protrude past the wheel rim outer surface. Wing nuts cannot b e used.  
5.7.3 When driving in a straight line, no wheel part (except for tyres) should surpass the vertical 
projection of the outer surface of the vehicle body. If this is unavoidable due to functional 
purpose (e.g. wheel cap), the projection should be no more than 30mm. The fillet radius of the 
projection should be no less than 30 mm.  
 
5.8 The edges of the metal panels  
Metal panels such as the gutter channel and sliding door rail should be flanged or fitted with 
protective components that meet the requirem ents of this standard.  
Non-protected edges should be flanged 180°, or flanged towards the vehicle body surface, so 
that it is not contactable by a ball with a diameter of 100mm.  
The metal panels of the rear edge of the engine hood and the front edge of the  boot lid do not 
need to meet the requirements of 4.4. 
 
5.9 Vehicle body panels  
The fillet radius of the vehicle body panel ribs can be less than 2.5mm, but should be no less 
than 1/10 of the projection height measured according to Appendix B.1.  
5.10 Side air and rain deflector  
The fillet radius of the vehicle side deflector’s outer edge should be no less than 1mm.  
 
5.11 Jack support and exhaust  
The projection of the jack support and exhaust should not surpass the floor line by more than 
10mm. If the end o f the exhaust is round with a minimum fillet radius of 2.5 mm, then the 
exhaust can projection can exceed  the floor line by 10mm.  
 
5.12 Air flap  
Air flaps at all locations should meet the requirements in 4.2 , 4.3, 4.4.  
 
5.13 Top  
5.13.1 For a top with a sun-roof, only its closed position is considered.  
5.13.2 For convertibles, it should be inspected with both roof raised and lowered.  
5.13.2.1 When the roof is lowered, objects should not be inspected as if the roof is up.  
5.13.2.2 When the roof is lower ed, if there  is a cover supplied as standard, the cover should be 
taken into consideration.  
 
5.14 Windows    GB 11566 —200× 
For windows that move outwards from the vehicle, it should meet the following requirements in 
all positions:  
— There should be no exposed edge towards the front;  
— No parts of the window should project from the outer edge of the vehicle.  
 
5.15 Number Plate  
When the number plate is fitted as per manufacture’s recommendation, use a ball (diameter = 
100mm) to contact. It should meet the requirements in 4.4.  
 
5.16 Roof rack and ski attachment  
5.16.1 When roof rack and ski attachment are fitted on the vehicle, they should be firmly fitted 
on at least one side and be able to bear both longitudinal and lateral force. The force applied 
should be no less than maximu m value of manufacturer’s specifications. The load should not be 
applied only on one point.  
5.16.2 When roof rack and ski attachment are fitted on the vehicle, use a ball (diameter = 165mm) 
to contact. The fillet radius of the contact surface should be no less than 2.5mm, excluding those 
meeting the requirements in 5.3.  
5.16.3 For fixing parts mentioned in 5.16.2 (e.g. screws that can be tightened or loosened without 
using a tool), the projection height should be no more than 40mm. The projection height is 
measured using a ball (diameter = 165mm) as per instructions in Appendix B.2.2.  
 
5.17 Aerial  
5.17.1 When the aerial is fitted on the vehicle at any one location specified by manufacturer, if 
the height of the aerial (top to ground) is less than 1.8m, is sh ould be located 100mm inside of 
the outer edge of the vehicle.  
5.17.2 In addition, the tip of the aerial should not project outside of the outer edge of the vehicle.  
5.17.3 The fillet radius of the aerial mast may be less than 2.5mm, but the aerial top s hould be 
fitted with a cap, the fillet radius of which should be no less than 2.5mm.  
5.17.4 When measuring as per Appendix B.2, the projection of the aerial base should be no more 
than 40mm.  
5.17.4.1 When the aerial base cannot be identified, on the most  projected part of the aerial, use a 
flat-end head (diameter no more than 50mm) to apply a maximum 500N horizontal force . The 
following should be met:  
a) The aerial bends towards the support and projection height should be no more than 40mm, or  
b) The aeri al breaks and the remaining part should not be sharp or likely to pose danger. Use a 
ball (diameter = 100mm) to contact, the projection height should be no more than 40mm.  
5.17.4.2 5.17.4 and 5.17.4.1 requirements are not applicable to aerials located beh ind the 
horizontal -vertical planes that pass the “R” of the driver.  
If the aerials are located behind the horizontal -vertical planes, then the aerial including the base 
should be measured as per Appendix B.2, provided  the projection height does not exceed 70mm.  
If the aerials are located behind the horizontal -vertical planes, and the projection height exceeds 
70mm, 5.17.4.1 is still applicable. The projection height limit is 70mm not 40mm.    GB 11566 —200× 
5.18 Installation instructions  
The approved roof rack, ski attachme nt and aerials (as a separate part) should come with 
installation instructions. Otherwise, they cannot be sold.  
The installation instructions should contain adequate data reference, so that the approved parts 
can meet the requirements in chapter 4 and 5 af ter installed on the vehicle. For retractable aerials, 
its usage location should be pointed out.    GB 11566 —200× 
 
Appendix A  (Guideline Appendix)  The correlation of the chapter 
numbering in this standard and ECE R26  
Table A.1 lists the correlation of the chapter numberin g in this standard and ECE R26  
 
Table A.1 The correlation of the chapter numbering in this standard and ECE R26  
 
Chapter numbering in this 
standard  Correlated chapter 
numbering of international 
standard  Chapter numbering in this 
standard  Correlated chapter  
numbering of international 
standard  
1 1 5.8 6.8 
1 1.1 5.9 6.9 
1 1.2 5.10 6.10 
2 ——  5.11 6.11 
3 2 5.12 6.12 
3.1 2.2 5.13 6.13 
3.2 2.3 5.14 6.14 
3.3 2.4 5.15 6.15 
3.4 2.5 5.16 6.16 
3.5 2.6 5.17 6.17 
3.6 2.7 5.18 6.18 
3.7 2.8 ——  7 
3.8 2.9 ——  8 
3.9 2.10 ——  9 
——  3 ——  10 
——  4 ——  11 
4 5 ——  12 
4.1 5.1 ——  Appendix 1  
4.2 5.2 ——  Appendix 2  
4.3 5.3 Appendix A  ——  
4.4 5.4 Appendix B  Appendix 3  
4.5 5.5 Appendix B.1  Appendix 3 1 
4.6 5.6 Appendix B.1.1  Appendix 3 1.1,1.2  
5 6 Appendix B.1.2  Appendix 3 1.3 
5.1 6.1 Appendix B.1.3  Appendix 3 1.4 
5.2 6.2 Appendix B.2  Appendix 3 2 
5.3 6.3 Appendix B.2.1  Appendix 3 2.1 
5.4 6.4 Appendix B.2.2  Appendix 3 2.2   GB 11566 —200× 
5.5 6.5 Appendix B.3  Appendix 3 3 
5.6 6.6 Appendix B.4  Appendix 3 4 
5.7 6.7 ——  Appendix 4  
 
Appendix B  (Guideline Appendix)  Projection and gap measurement 
method  
B.1 Measurement methods for projected and folded parts on body panels  
B.1.1 When the measured section has only one  stiffening rib (see Figure B.1):  
 
 
Figure B.1  
 
a) The installation fundamental circle (diameter = 165mm) is tangent with tested section of the 
vehicle body at point M and Q;  
b) Link the projection tip N with the centre of the circle O, meeting with the circle at point P;  
c) The distance between P & N is the projection height (h) of the tested part.  
 
B.1.2 If the tested section has two projections (see Figure B.2):  
   GB 11566 —200× 
 
Figure B.2  
 
a) The circle (diameter = 100mm) is tangent with tested section of the ve hicle body at point 
Q and L (see Figure B.2);  
b) Substitute the original curve QL with the curve QWL of the 100mm -diameter circle;  
c) Calculate the projection height as per Appendix B.1.1.  
B.1.3 Manufacture r should provide the section plan of the tested p art to determine the projection 
height.  
B.2. Measurement of the projection size of the parts fitted on the vehicle body surface  
B.2.1 The projection size of a part fitted on a projected surface can be measured directly.  
B.2.2 If a part is fitted on a non -projected surface (see Figure B.3), roll a ball (diameter = 100mm) 
along the tested surface and acquire the 3 centres of the ball O 1, O 2 and O 3. Link O 1 and O 3 to get 
the nominal line (O 1O3). The perpendicular line between O 2 (furthest ball centre from O 1O3) and 
the tested surface meets the nominal line (O 1O3) at Q. The distance between O 2 and Q is the 
projection height (h) of the test object . 
Figure B.3    GB 11566 —200× 
 
B.3 Measurement of the projection size of the headlight hood and bezel  
Use a ball (diameter = 100mm) to measure (see Figure B.4). The ball (diameter = 100mm) meets 
the headlight screen at point L and meets the headlight hood at point Q at the same time. The 
distance (h) between the two vertical projections L and Q is the projection height.  
 
 
Figure B.4  
B.4 Measurement of the gap between the grilles  
The gap between the grilles is measured by the two contact points of the ball (see Figure B.5 and 
B6). Use a ball (diameter = 100mm) to contact two adjacent components of the grilles. The two 
contact points ar e L and Q. The distance (h) between L and Q is the gap.  
Figure B.6  Headlight hood  
Grille